I wouldn't worry about the top 5 schools for now. Could be a lot of factors. He's only been on the market for weeks and had been committed to GT since November.
Here is the scouting report on Williams courtesy of 247Sports director of scouting Andrew Ivins:
"A dual-threat talent with a stronger arm that can whip the ball to all different levels. Owns an athletic build and is pushing 6-foot-2, 190 pounds. Tested in the upper percentile spring before senior season, which isn’t surprising as he can also attack the rim on the hardwood. Ability to extend plays and evade pressure is without a doubt one of his biggest strengths at this stage in his development. So is his vision as a runner in the open field. Might have no issues trying to move chains with his legs, but has also shown that he can stand in the pocket and go through his progressions. Prep highlight tape is loaded up with some impressive throws, but must continue to improve accuracy after completing just under 60 of his passes as a junior in one of the Peach State’s lower classifications. Should be viewed as a plus athlete at the quarterback position with a higher ceiling that can win games at the Power Five level on Saturdays if he keeps progressing."
Other offers that Williams holds are Virginia Tech, NC State, Pitt, UCF, Liberty, Troy, Georgia State, Georgia Southern, and Coastal Carolina.